qt.qpa.xcb: could not connect to display #25926

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<!-- Describe the issue -->

ubuntu 20.04 desktop with necessary build tools for bitcoin core

QFactoryLoader::QFactoryLoader() ignoring "org.qt-project.Qt.QPA.QPlatformIntegrationFactoryInterface.5.3" since plugins are disabled in static builds qt.qpa.xcb: could not connect to display qt.qpa.plugin: Could not load the Qt platform plugin "xcb" in "" even though it was found

bitcoin core v23.0 built using depends on ubuntu 20.04 NOTE: same issue is present with 22.0 binaries built on ubuntu 18.04 the binaries run just fine on the 18.04 server

This appears to be a dependency issue in the build tree

Expected behavior

<!--- What behavior did you expect? -->

bitcoin-qt to start Actual behavior bitcoin-qt failed to start, error message above

<!--- What was the actual behavior (provide screenshots if the issue is GUI-related)? -->

To reproduce install fresh ubuntu 20.04 or lubuntu 20.04 desktop apt-get install ..... the build stuff for bitcoin core cd depends make cd .. ./autogen.sh configure --- with lots of stuff normally used run binary with normal config

<!--- How reliably can you reproduce the issue, what are the steps to do so? -->

100% every time System information lubuntu 20.04 and ubuntu 20.04

<!-- What version of Bitcoin Core are you using, where did you get it (website, self-compiled, etc)? -->

github checkout tag v23.0

<!-- What type of machine are you observing the error on (OS/CPU and disk type)? -->

proliant GL380-G7 192G/ram 2T disk

<!-- GUI-related issue? What is your operating system and its version? If Linux, what is your desktop environment and graphical shell? -->

see above

<!-- Any extra information that might be useful in the debugging process. -->

tried all the solutions found with google, about a half dozen of them The error message about platforms not included in static build appears to be the key, do not know how to resolve that.

<!--- This is normally the contents of a `debug.log` or `config.log` file. Raw text or a link to a pastebin type site are preferred. -->

config parameters ./configure --enable-glibc-back-compat --prefix=$(pwd)/depends/x86_64-pc-linux-gnu LDFLAGS="-static-libstdc++" --enable-cxx --enable-static --disable-shared --disable-debug --disable-tests --disable-bench --with-pic CPPFLAGS="-fPIC -O2 --param ggc-min-expand=1 --param ggc-min-heapsize=32768" CXXFLAGS="-fPIC -O2 --param ggc-min-expand=1 --param ggc-min-heapsize=32768"

@techy2

~Please move this issue int the dedicated https://github.com/bitcoin-core/gui repo.~ (this looks like a build issue)

What is Qt configure summary when you built Qt package in your depends?

@techy2

config parameters ./configure --enable-glibc-back-compat --prefix=$(pwd)/depends/x86_64-pc-linux-gnu LDFLAGS="-static-libstdc++" --enable-cxx --enable-static --disable-shared --disable-debug --disable-tests --disable-bench --with-pic CPPFLAGS="-fPIC -O2 --param ggc-min-expand=1 --param ggc-min-heapsize=32768" CXXFLAGS="-fPIC -O2 --param ggc-min-expand=1 --param ggc-min-heapsize=32768"

Building with depends requires to use CONFIG_SITE variable.

tried all the solutions found with google, about a half dozen of them

Mind trying to follow the docs?

https://github.com/bitcoin-core/gui/issues/656